Home / 280,409,878.60-420,238,841.73-218,236,266.88

Finding the Fourth Proportional to 280,409,878.60, 420,238,841.73 and 218,236,266.88

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Solution

The fourth proportional to 280,409,878.60, 420,238,841.73 and 218,236,266.88 is: 327,061,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409,878.60 : 420,238,841.73 = 218,236,266.88 : x
  2. Step 2: Convert to fraction form
    280,409,878.60/420,238,841.73 = 218,236,266.88/x
  3. Step 3: Cross multiply
    280,409,878.60x = 420,238,841.73 × 218,236,266.88
  4. Step 4: Simplify right side
    280,409,878.60x = 91,711,356,017,130,368
  5. Step 5: Solve for x
    x = 91,711,356,017,130,368/280,409,878.60
  6. Step 6: Final answer
    x = 327,061,787.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.